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All results from a given calculation for HNCS (Isothiocyanic acid)

using model chemistry: PBEPBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
1 2 no C*V 1Σ

Conformer 1 (CS)

Jump to S1C2
Energy calculated at PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-491.415399
Energy at 298.15K-491.416149
HF Energy-491.415399
Nuclear repulsion energy79.401692
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBEPBE/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3588 3564 180.08      
2 A' 2004 1990 569.40      
3 A' 865 859 0.91      
4 A' 671 667 314.28      
5 A' 450 447 49.13      
6 A" 473 470 4.18      

Unscaled Zero Point Vibrational Energy (zpe) 4025.9 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 3998.1 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBEPBE/cc-pVTZ
ABC
33.63265 0.19415 0.19304

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.166 1.697 0.000
C2 0.000 0.496 0.000
S3 0.041 -1.082 0.000
H4 0.510 2.450 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.21232.78621.0126
C21.21231.57812.0197
S32.78621.57813.5629
H41.01262.01973.5629

picture of Isothiocyanic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 S3 173.594 C2 N1 H4 130.184
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.133      
2 C 0.043      
3 S -0.103      
4 H 0.193      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.082 1.585 0.000 1.919
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.323 2.906 0.000
y 2.906 -19.293 0.000
z 0.000 0.000 -25.135
Traceless
 xyz
x -2.110 2.906 0.000
y 2.906 5.436 0.000
z 0.000 0.000 -3.326
Polar
3z2-r2-6.653
x2-y2-5.031
xy2.906
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.294 -0.208 0.000
y -0.208 9.349 0.000
z 0.000 0.000 3.141


<r2> (average value of r2) Å2
<r2> 61.148
(<r2>)1/2 7.820

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-491.410450
Energy at 298.15K 
HF Energy-491.410450
Nuclear repulsion energy79.474333
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBEPBE/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 3828 3801 634.64      
2 Σ 2115 2100 615.71      
3 Σ 851 845 18.53      
4 Π 470 466 9.05      
4 Π 470 466 9.05      
5 Π 516i 512i 136.63      
5 Π 516i 512i 136.63      

Unscaled Zero Point Vibrational Energy (zpe) 3350.1 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 3327.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBEPBE/cc-pVTZ
B
0.19181

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.685
C2 0.000 0.000 -0.497
S3 0.000 0.000 1.091
H4 0.000 0.000 -2.681

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.18782.77570.9963
C21.18781.58782.1841
S32.77571.58783.7719
H40.99632.18413.7719

picture of Isothiocyanic acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 S3 180.000 C2 N1 H4 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.125      
2 C 0.063      
3 S -0.156      
4 H 0.218      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.925 2.925
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.093 0.000 0.000
y 0.000 -25.093 0.000
z 0.000 0.000 -15.790
Traceless
 xyz
x -4.652 0.000 0.000
y 0.000 -4.652 0.000
z 0.000 0.000 9.303
Polar
3z2-r218.606
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.119 0.000 0.000
y 0.000 3.119 0.000
z 0.000 0.000 9.162


<r2> (average value of r2) Å2
<r2> 61.315
(<r2>)1/2 7.830